Ignore IDEA-files.

git-svn-id: https://svn.apache.org/repos/asf/creadur/whisker/trunk@1622927 13f79535-47bb-0310-9956-ffa450edef68
[WHISKER-12] Cleanup Build Infrastructure
- Add an execution to animal-sniffer so that it actually runs

git-svn-id: https://svn.apache.org/repos/asf/creadur/whisker/trunk@1622932 13f79535-47bb-0310-9956-ffa450edef68
[WHISKER-12] Cleanup Build Infrastructure
- Require Maven 3.0.5 to build this project, the same version that is used in Rat

git-svn-id: https://svn.apache.org/repos/asf/creadur/whisker/trunk@1622933 13f79535-47bb-0310-9956-ffa450edef68
Move plugin version definitions that were put under dependencyManagement instead of pluginManagement.

git-svn-id: https://svn.apache.org/repos/asf/creadur/whisker/trunk@1622934 13f79535-47bb-0310-9956-ffa450edef68
[WHISKER-12] Cleanup Build Infrastructure
- Always run Rat

git-svn-id: https://svn.apache.org/repos/asf/creadur/whisker/trunk@1622935 13f79535-47bb-0310-9956-ffa450edef68